MANUFACTURE OF MICRO SPECIMEN FOR MEASURING PORE SIZE OF ULTRAFILTER AND MICROFILTER AND SPECIMEN MANUFACTURED THROUGH SAID METHOD

摘要

The process provides for round glass, quartz or metal spheres having diameters lying in a fairly large tolerance range to be used and for these spheres to be passed through plastic or metal pore masks having a predetermined pore size and thereby selected in order to produce the probe bodies. IMAGE